In Joel Spolsky’s words: "HyperDev is going to be the fastest way to bang out code and get it running on the internet." If you’re into serious coding, this will be your new go to address. Read more about this amazing new code editor here .

Microlight.js is a tiny open-source library which improves readability of code snippets by highlighting, for any programming language, without attaching additional language-packages or styles. Made by Dmitry Prokashev.

AnyPixel.js is an open-source software and hardware library that makes it possible to use the web to create big, unusual, interactive displays out of all kinds of things. Anyone can fork the code and the schematics to create their own display at any scale. By Google.